Ineed with 7 and 9, or correct me if i got 8 wrong.

7. Is 4 tickets for 1 dollar is the worse price. The unit price is .25 cents per ticket, and the better deal which is 25 tickets for 5 dollars has the unit price of .20 cents per ticket. Hope this helps! I will work on the other questions in a minute.

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*